Hair Loss

Both an underactive and an overactive thyroid can thin your hair. The clues to look for, which blood test to ask for, and how hair recovers once it is treated.

Rosemary water is all over social media, but the evidence behind rosemary for hair comes from the oil. How the two compare and how to use each safely.

Low iron is one of the most common fixable causes of hair shedding, and a normal blood test can still miss it. What ferritin is, what to ask for, and how recovery works.

Low-dose oral minoxidil has gone from fringe to mainstream. How it compares to the foam or liquid on results, side effects, cost and convenience.

A smooth, round bald patch that appears out of nowhere is usually alopecia areata. What causes it, whether it grows back, and which treatments actually work.

Losing more hair after starting minoxidil is normal and usually a good sign. Here is why the shed happens, how long it lasts, and when to worry.

Yes, stress can genuinely make your hair fall out — but not the way most people think, and not permanently

Red light therapy’s side-effect profile is one of the mildest of any hair treatment.

The best dandruff shampoo isn’t a brand — it’s an active ingredient matched to your scalp. Health note: This article

The same mechanism that helps scalp hair applies to eyebrows and beards — with real caveats around eye safety.